Effect of catalyst loading pattern on selective hydrogenation of C3 distillates via catalytic distillation

Bu Liang Gao, Zhen Min Cheng, Bin Mu, Jian Guo Shen, Jin Ming Jia, Lian Zhang, Wei Kang Yuan

Research output: Contribution to journalArticle

Abstract

In order to investigate the effect of catalyst loading pattern on the reaction result in a catalytic distillation column, the studies both on the residence time distribution (RTD) and the liquid solid mass transfer were conducted. The experiments reveal that the liquid-solid mass transfer coefficient for the pattern of randomly dumped packing with ring-type catalytic is about three times higher than that of regularly stacked packing with pillar-type catalyst, and the liquid flow in the dumped packing may be treated as a plug flow, while the RTD of stacked packing could be described by 11-CSTRs (continuous stirred tank reactors) in series. The selective hydrogenation experiments of C3 distillates show that for the pattern of dumped packing, the performance of removing MAPD to less than 15 μg·g-1 is superior to that of stacked packing which is caused by the combinative influence of inadequate liquid-solid contact and a certain degree back mixing of the liquid phase when the pattern of stacked packing is used.

Original languageEnglish (US)
Pages (from-to)767-771
Number of pages5
JournalGao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities
Volume19
Issue number6
StatePublished - Dec 1 2005
Externally publishedYes

Keywords

  • Catalytic distillation
  • Propadiene
  • Propyne
  • Residence time distribution (RTD)
  • Selective hydrogenation

ASJC Scopus subject areas

  • Chemical Engineering(all)

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